Variables are divided into three types based on behavior and position of declaration. They are:1. Instance Variables2. Static Variables3. Local Variables Instance Variables: –> Instance variables are the variables which [ … ]

Element level promotions are not applicable at array object level.Example: A char value can be promoted to int type but char array cannot be promoted to int array.Example:int[] x={5, 10, [ … ]

In primitive arrays as array elements is allowed which can be promoted to declare type.Example:For int arrays allowed array elements types are byte, short, char, int. int[] a=new int[10];a[0]=86;a[1]=’x’;byte b=10;a[2]=b;short [ … ]

Array created with no name are called anonymous array. The main objective of this array is for instant use (i.e., just for one instant use). Example:1. new int[] {5,10,15,20};2. new [ … ]

length:It is the applicable only for array. It represents the size of the arrayExample:int[] array=new int[5];System.out.println(array.length);Output:5 In multidimensional array length represents only base size not a total sizeExample:int[][] arr=new int[5][3];System.out.println(arr.length); [ … ]